code: def test_get_root(app: FastAPI):
      client = TestClient(app)
      response = client.get("/")
      assert response.status_code == 200, response.text
      assert b"<form" in response.content
  
file_path: fastapi/tests/test_tutorial/test_request_files/test_tutorial003_an_py39.py
imports: import pytest
  from fastapi import FastAPI
  from fastapi.testclient import TestClient
  from ...utils import needs_py39
label_desc: Use image node_id 5 for calling a global function with example usage: test_get_root(app) without return types